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Annie's pen goes missing in the study room, and the only suspects are the other members of the group. Unwilling to leave the mystery unsolved, the room is locked down while Jeff leads a search for the object. During all this, Troy and Abed worry about missing the Greendale Puppy Parade taking place elsewhere on campus.
Britta: So if I took it, it's larceny, but if you find it under Mother Hen, it's a mistake?
Shirley: Mother Hen? I think we're about the same age.
Britta: Sure, unless time is linear.
Shirley: I'll make your ass linear!
Britta: That doesn't make any sense.
Shirley: I'll make your ass sense!